Improved lathe-carriage



viiiftger" tnt15" etimt ffine`.

Leim 'Paten No. 75,933, and Mme 24, 1868.

IMPEOVLD MTBE-CARRIAGE.

@in Srigihtlifnimh' tu itllgsstrtiets @anni mit mtliiug part nf the tante'.

'-To ALL -WHOM 'Entity GONCERN: l

ABe it. known lthat L GEoRe-E W. L EWIN, of Worcester, in vthe count)r of Worcester, ahd State of Massachusetts, haveim'ented ,e new and useful Improvement in Lethe-Carriages; and-Ido hereby declareuthe `following to 'be .zi foil,- clear, and endet' descriptionof the same, reference .being had to the accompanying drawinggin wliich-`` v I Figure l'represents a perspective iii-ew `of my invention, and4 ,l Figure 2":1. side eleynation ofthe same. 'i -V My invention consists in an improved device for holding the platos oi` s'toves,'or other castings or forgings, in dhorizonta-l positi onvibile-any'operationuch nsdrilling, Ste., is performed upon them, andretaining them- .in such position to whatever-height it may `be desired, withinthe limits ofthe machine, Asind a'tjthe saone 'time `allowiing free Increment in -a lateral direction. i I

In order that 4O hers m'ay nnderstand the'constriietion ,and operation of myi-nvention, I will proceed to particularly` describe it` A, fig. 1, represents the frame or ways of' a lathe, on which the carriage B rests, and they may hernade of `wood or iron, ns desired.- The carriage Bconsists of thetxro bent metal beams C CK, connected together and `secured by the three transverse rods D DD..4 Iheform 'of the beams C10, shown in fig. 1 of tlledrewi'ng's, iszwell adziptedto-allthe requirements of themachine, lint-it isdobvious that alnj desiredform inay be given' to tlaemwithout preventing the proper'wrorkingpf theseme. To the' under surface of eztcli'ot` the beams C C, and at, equalv distance eport, are secured the legs of the carriagenvhich hold the wheels gg-in the slots i` i; Thev enten parte of' these legs extend downward below the wheels, and turn under the flanges@ a, or theii` equivalent, in order to prevent the carriage from beingraised up'from the ways. The outer-end of euch benin C is enlarged and bentV inward, and wvertical hole is made init to receive the postsF F F F, orsupp'orts'of the platform E: A portion'i's cut` awr-dy on Vthe inner side of each beam, et this vertical hole, to` allow` the rack ofthe posts F'to passfreely np andl down. The end of earch heain is turned inward a sui'licient distance to receive the enflsof' the pinion-shaftsv GVG, which are pnrallelfto the inner surfaces of the beams C C, the pnions ofwhich worli in the racks on the posts F .Ff-moving them lip 'or down as desired.. These shai'ts G are turned by 4the endless screws c c on the shaft H, which Ais supportedvin the beams 'C C 'et the points Z2, motionl being'icomiiinnicited by the hendle'I, iig. 2. The serewswc e work into the cog-wheels d d, which arev firmly* secured tothe pinion-shaft`s GG, :ind nsthe Vshaft His turned by the handle I, the shafts G Gr areturned, end

`the pinions ce, atleoch end` of the shafts G G,.work in the racks ofl the posts F I", causing them to move togetlier,ei'tlierup or donn,'as desired. lo'thet'op of these four posts is secured the platform E, mede ot wood or inetah'and on 1which the-plete to be drilled is sconti-ed. On the front face of the bedm C', and'at'equztl distnncefrom the ends,l is/anr upright post, L, securely fastened, against' which the platform E is pressed, when in`use,-so vas to take oli' @poi-tion of' thelateral pressure on the posts, F if".A y

4By the nrrangem'ent and devices herein described, thev entire platform, and the plate resting thereon, are carried np uniformly Withe single crank-movement. i Y' Having ths described nay-invention, what I clainil as new', isp Thc'arrangenent of' theendless screws ce, rack end-pinion of the posts F F, with the platform E, :is and for thepurposcdescribed. i i l l i GEORGE W. LEWIN.v

, Witnesses.: Jenn DAVIS,

E.- W. Bie'ELoW. 

